Cabalized and modularized project
Additionally, added scaffolding for the future implementation of a test suite, as well as TODO markers for documentation. Signed-off-by: Collin J. Doering <collin.doering@rekahsoft.ca>
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*~
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*~
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*.hi
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*.o
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dist
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-- Initial Asmblr.cabal generated by cabal init. For further
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-- documentation, see http://haskell.org/cabal/users-guide/
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||||||
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||||||
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-- The name of the package.
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name: Asmblr
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||||||
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||||||
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-- The package version. See the Haskell package versioning policy (PVP)
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-- for standards guiding when and how versions should be incremented.
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-- http://www.haskell.org/haskellwiki/Package_versioning_policy
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-- PVP summary: +-+------- breaking API changes
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-- | | +----- non-breaking API additions
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-- | | | +--- code changes with no API change
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version: 0.1.0.0
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||||||
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-- A short (one-line) description of the package.
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||||||
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synopsis: Assembler for Hack platform
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||||||
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||||||
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-- A longer description of the package.
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||||||
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-- description:
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||||||
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||||||
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-- URL for the project homepage or repository.
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||||||
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homepage: http://git.rekahsoft.ca/hack
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||||||
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-- The license under which the package is released.
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||||||
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license: GPL-3
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||||||
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||||||
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-- The file containing the license text.
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||||||
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license-file: LICENSE
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||||||
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|
||||||
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-- The package author(s).
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||||||
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author: Collin J. Doering
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||||||
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||||||
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-- An email address to which users can send suggestions, bug reports, and
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||||||
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-- patches.
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||||||
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maintainer: collin.doering@rekahsoft.ca
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||||||
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|
||||||
|
-- A copyright notice.
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||||||
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-- copyright:
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||||||
|
|
||||||
|
-- category:
|
||||||
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||||||
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build-type: Simple
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||||||
|
|
||||||
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-- Extra files to be distributed with the package, such as examples or a
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||||||
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-- README.
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||||||
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-- extra-source-files:
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||||||
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|
||||||
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-- Constraint on the version of Cabal needed to build this package.
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||||||
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cabal-version: >=1.10
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||||||
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||||||
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||||||
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executable Asmblr
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-- .hs or .lhs file containing the Main module.
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main-is: Main.hs
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||||||
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-- Modules included in this executable, other than Main.
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||||||
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-- other-modules:
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||||||
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|
||||||
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-- LANGUAGE extensions used by modules in this package.
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||||||
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-- other-extensions:
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||||||
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||||||
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-- Other library packages from which modules are imported.
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||||||
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build-depends: base >=4.8 && <4.9, parsec >=3.1 && <3.2, filepath >=1.4 && <1.5, containers >=0.5 && <0.6
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||||||
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-- Directories containing source files.
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||||||
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hs-source-dirs: src
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||||||
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||||||
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-- Base language which the package is written in.
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default-language: Haskell2010
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@ -0,0 +1,674 @@
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GNU GENERAL PUBLIC LICENSE
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||||||
|
Version 3, 29 June 2007
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||||||
|
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||||||
|
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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||||||
|
Everyone is permitted to copy and distribute verbatim copies
|
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|
of this license document, but changing it is not allowed.
|
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|
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|
Preamble
|
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|
The GNU General Public License is a free, copyleft license for
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software and other kinds of works.
|
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|
The licenses for most software and other practical works are designed
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To protect your rights, we need to prevent others from denying you
|
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|
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|
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TERMS AND CONDITIONS
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0. Definitions.
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"This License" refers to version 3 of the GNU General Public License.
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||||||
|
from the Corresponding Source as a System Library, need not be
|
||||||
|
included in conveying the object code work.
|
||||||
|
|
||||||
|
A "User Product" is either (1) a "consumer product", which means any
|
||||||
|
tangible personal property which is normally used for personal, family,
|
||||||
|
or household purposes, or (2) anything designed or sold for incorporation
|
||||||
|
into a dwelling. In determining whether a product is a consumer product,
|
||||||
|
doubtful cases shall be resolved in favor of coverage. For a particular
|
||||||
|
product received by a particular user, "normally used" refers to a
|
||||||
|
typical or common use of that class of product, regardless of the status
|
||||||
|
of the particular user or of the way in which the particular user
|
||||||
|
actually uses, or expects or is expected to use, the product. A product
|
||||||
|
is a consumer product regardless of whether the product has substantial
|
||||||
|
commercial, industrial or non-consumer uses, unless such uses represent
|
||||||
|
the only significant mode of use of the product.
|
||||||
|
|
||||||
|
"Installation Information" for a User Product means any methods,
|
||||||
|
procedures, authorization keys, or other information required to install
|
||||||
|
and execute modified versions of a covered work in that User Product from
|
||||||
|
a modified version of its Corresponding Source. The information must
|
||||||
|
suffice to ensure that the continued functioning of the modified object
|
||||||
|
code is in no case prevented or interfered with solely because
|
||||||
|
modification has been made.
|
||||||
|
|
||||||
|
If you convey an object code work under this section in, or with, or
|
||||||
|
specifically for use in, a User Product, and the conveying occurs as
|
||||||
|
part of a transaction in which the right of possession and use of the
|
||||||
|
User Product is transferred to the recipient in perpetuity or for a
|
||||||
|
fixed term (regardless of how the transaction is characterized), the
|
||||||
|
Corresponding Source conveyed under this section must be accompanied
|
||||||
|
by the Installation Information. But this requirement does not apply
|
||||||
|
if neither you nor any third party retains the ability to install
|
||||||
|
modified object code on the User Product (for example, the work has
|
||||||
|
been installed in ROM).
|
||||||
|
|
||||||
|
The requirement to provide Installation Information does not include a
|
||||||
|
requirement to continue to provide support service, warranty, or updates
|
||||||
|
for a work that has been modified or installed by the recipient, or for
|
||||||
|
the User Product in which it has been modified or installed. Access to a
|
||||||
|
network may be denied when the modification itself materially and
|
||||||
|
adversely affects the operation of the network or violates the rules and
|
||||||
|
protocols for communication across the network.
|
||||||
|
|
||||||
|
Corresponding Source conveyed, and Installation Information provided,
|
||||||
|
in accord with this section must be in a format that is publicly
|
||||||
|
documented (and with an implementation available to the public in
|
||||||
|
source code form), and must require no special password or key for
|
||||||
|
unpacking, reading or copying.
|
||||||
|
|
||||||
|
7. Additional Terms.
|
||||||
|
|
||||||
|
"Additional permissions" are terms that supplement the terms of this
|
||||||
|
License by making exceptions from one or more of its conditions.
|
||||||
|
Additional permissions that are applicable to the entire Program shall
|
||||||
|
be treated as though they were included in this License, to the extent
|
||||||
|
that they are valid under applicable law. If additional permissions
|
||||||
|
apply only to part of the Program, that part may be used separately
|
||||||
|
under those permissions, but the entire Program remains governed by
|
||||||
|
this License without regard to the additional permissions.
|
||||||
|
|
||||||
|
When you convey a copy of a covered work, you may at your option
|
||||||
|
remove any additional permissions from that copy, or from any part of
|
||||||
|
it. (Additional permissions may be written to require their own
|
||||||
|
removal in certain cases when you modify the work.) You may place
|
||||||
|
additional permissions on material, added by you to a covered work,
|
||||||
|
for which you have or can give appropriate copyright permission.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, for material you
|
||||||
|
add to a covered work, you may (if authorized by the copyright holders of
|
||||||
|
that material) supplement the terms of this License with terms:
|
||||||
|
|
||||||
|
a) Disclaiming warranty or limiting liability differently from the
|
||||||
|
terms of sections 15 and 16 of this License; or
|
||||||
|
|
||||||
|
b) Requiring preservation of specified reasonable legal notices or
|
||||||
|
author attributions in that material or in the Appropriate Legal
|
||||||
|
Notices displayed by works containing it; or
|
||||||
|
|
||||||
|
c) Prohibiting misrepresentation of the origin of that material, or
|
||||||
|
requiring that modified versions of such material be marked in
|
||||||
|
reasonable ways as different from the original version; or
|
||||||
|
|
||||||
|
d) Limiting the use for publicity purposes of names of licensors or
|
||||||
|
authors of the material; or
|
||||||
|
|
||||||
|
e) Declining to grant rights under trademark law for use of some
|
||||||
|
trade names, trademarks, or service marks; or
|
||||||
|
|
||||||
|
f) Requiring indemnification of licensors and authors of that
|
||||||
|
material by anyone who conveys the material (or modified versions of
|
||||||
|
it) with contractual assumptions of liability to the recipient, for
|
||||||
|
any liability that these contractual assumptions directly impose on
|
||||||
|
those licensors and authors.
|
||||||
|
|
||||||
|
All other non-permissive additional terms are considered "further
|
||||||
|
restrictions" within the meaning of section 10. If the Program as you
|
||||||
|
received it, or any part of it, contains a notice stating that it is
|
||||||
|
governed by this License along with a term that is a further
|
||||||
|
restriction, you may remove that term. If a license document contains
|
||||||
|
a further restriction but permits relicensing or conveying under this
|
||||||
|
License, you may add to a covered work material governed by the terms
|
||||||
|
of that license document, provided that the further restriction does
|
||||||
|
not survive such relicensing or conveying.
|
||||||
|
|
||||||
|
If you add terms to a covered work in accord with this section, you
|
||||||
|
must place, in the relevant source files, a statement of the
|
||||||
|
additional terms that apply to those files, or a notice indicating
|
||||||
|
where to find the applicable terms.
|
||||||
|
|
||||||
|
Additional terms, permissive or non-permissive, may be stated in the
|
||||||
|
form of a separately written license, or stated as exceptions;
|
||||||
|
the above requirements apply either way.
|
||||||
|
|
||||||
|
8. Termination.
|
||||||
|
|
||||||
|
You may not propagate or modify a covered work except as expressly
|
||||||
|
provided under this License. Any attempt otherwise to propagate or
|
||||||
|
modify it is void, and will automatically terminate your rights under
|
||||||
|
this License (including any patent licenses granted under the third
|
||||||
|
paragraph of section 11).
|
||||||
|
|
||||||
|
However, if you cease all violation of this License, then your
|
||||||
|
license from a particular copyright holder is reinstated (a)
|
||||||
|
provisionally, unless and until the copyright holder explicitly and
|
||||||
|
finally terminates your license, and (b) permanently, if the copyright
|
||||||
|
holder fails to notify you of the violation by some reasonable means
|
||||||
|
prior to 60 days after the cessation.
|
||||||
|
|
||||||
|
Moreover, your license from a particular copyright holder is
|
||||||
|
reinstated permanently if the copyright holder notifies you of the
|
||||||
|
violation by some reasonable means, this is the first time you have
|
||||||
|
received notice of violation of this License (for any work) from that
|
||||||
|
copyright holder, and you cure the violation prior to 30 days after
|
||||||
|
your receipt of the notice.
|
||||||
|
|
||||||
|
Termination of your rights under this section does not terminate the
|
||||||
|
licenses of parties who have received copies or rights from you under
|
||||||
|
this License. If your rights have been terminated and not permanently
|
||||||
|
reinstated, you do not qualify to receive new licenses for the same
|
||||||
|
material under section 10.
|
||||||
|
|
||||||
|
9. Acceptance Not Required for Having Copies.
|
||||||
|
|
||||||
|
You are not required to accept this License in order to receive or
|
||||||
|
run a copy of the Program. Ancillary propagation of a covered work
|
||||||
|
occurring solely as a consequence of using peer-to-peer transmission
|
||||||
|
to receive a copy likewise does not require acceptance. However,
|
||||||
|
nothing other than this License grants you permission to propagate or
|
||||||
|
modify any covered work. These actions infringe copyright if you do
|
||||||
|
not accept this License. Therefore, by modifying or propagating a
|
||||||
|
covered work, you indicate your acceptance of this License to do so.
|
||||||
|
|
||||||
|
10. Automatic Licensing of Downstream Recipients.
|
||||||
|
|
||||||
|
Each time you convey a covered work, the recipient automatically
|
||||||
|
receives a license from the original licensors, to run, modify and
|
||||||
|
propagate that work, subject to this License. You are not responsible
|
||||||
|
for enforcing compliance by third parties with this License.
|
||||||
|
|
||||||
|
An "entity transaction" is a transaction transferring control of an
|
||||||
|
organization, or substantially all assets of one, or subdividing an
|
||||||
|
organization, or merging organizations. If propagation of a covered
|
||||||
|
work results from an entity transaction, each party to that
|
||||||
|
transaction who receives a copy of the work also receives whatever
|
||||||
|
licenses to the work the party's predecessor in interest had or could
|
||||||
|
give under the previous paragraph, plus a right to possession of the
|
||||||
|
Corresponding Source of the work from the predecessor in interest, if
|
||||||
|
the predecessor has it or can get it with reasonable efforts.
|
||||||
|
|
||||||
|
You may not impose any further restrictions on the exercise of the
|
||||||
|
rights granted or affirmed under this License. For example, you may
|
||||||
|
not impose a license fee, royalty, or other charge for exercise of
|
||||||
|
rights granted under this License, and you may not initiate litigation
|
||||||
|
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||||
|
any patent claim is infringed by making, using, selling, offering for
|
||||||
|
sale, or importing the Program or any portion of it.
|
||||||
|
|
||||||
|
11. Patents.
|
||||||
|
|
||||||
|
A "contributor" is a copyright holder who authorizes use under this
|
||||||
|
License of the Program or a work on which the Program is based. The
|
||||||
|
work thus licensed is called the contributor's "contributor version".
|
||||||
|
|
||||||
|
A contributor's "essential patent claims" are all patent claims
|
||||||
|
owned or controlled by the contributor, whether already acquired or
|
||||||
|
hereafter acquired, that would be infringed by some manner, permitted
|
||||||
|
by this License, of making, using, or selling its contributor version,
|
||||||
|
but do not include claims that would be infringed only as a
|
||||||
|
consequence of further modification of the contributor version. For
|
||||||
|
purposes of this definition, "control" includes the right to grant
|
||||||
|
patent sublicenses in a manner consistent with the requirements of
|
||||||
|
this License.
|
||||||
|
|
||||||
|
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||||
|
patent license under the contributor's essential patent claims, to
|
||||||
|
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||||
|
propagate the contents of its contributor version.
|
||||||
|
|
||||||
|
In the following three paragraphs, a "patent license" is any express
|
||||||
|
agreement or commitment, however denominated, not to enforce a patent
|
||||||
|
(such as an express permission to practice a patent or covenant not to
|
||||||
|
sue for patent infringement). To "grant" such a patent license to a
|
||||||
|
party means to make such an agreement or commitment not to enforce a
|
||||||
|
patent against the party.
|
||||||
|
|
||||||
|
If you convey a covered work, knowingly relying on a patent license,
|
||||||
|
and the Corresponding Source of the work is not available for anyone
|
||||||
|
to copy, free of charge and under the terms of this License, through a
|
||||||
|
publicly available network server or other readily accessible means,
|
||||||
|
then you must either (1) cause the Corresponding Source to be so
|
||||||
|
available, or (2) arrange to deprive yourself of the benefit of the
|
||||||
|
patent license for this particular work, or (3) arrange, in a manner
|
||||||
|
consistent with the requirements of this License, to extend the patent
|
||||||
|
license to downstream recipients. "Knowingly relying" means you have
|
||||||
|
actual knowledge that, but for the patent license, your conveying the
|
||||||
|
covered work in a country, or your recipient's use of the covered work
|
||||||
|
in a country, would infringe one or more identifiable patents in that
|
||||||
|
country that you have reason to believe are valid.
|
||||||
|
|
||||||
|
If, pursuant to or in connection with a single transaction or
|
||||||
|
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||||
|
covered work, and grant a patent license to some of the parties
|
||||||
|
receiving the covered work authorizing them to use, propagate, modify
|
||||||
|
or convey a specific copy of the covered work, then the patent license
|
||||||
|
you grant is automatically extended to all recipients of the covered
|
||||||
|
work and works based on it.
|
||||||
|
|
||||||
|
A patent license is "discriminatory" if it does not include within
|
||||||
|
the scope of its coverage, prohibits the exercise of, or is
|
||||||
|
conditioned on the non-exercise of one or more of the rights that are
|
||||||
|
specifically granted under this License. You may not convey a covered
|
||||||
|
work if you are a party to an arrangement with a third party that is
|
||||||
|
in the business of distributing software, under which you make payment
|
||||||
|
to the third party based on the extent of your activity of conveying
|
||||||
|
the work, and under which the third party grants, to any of the
|
||||||
|
parties who would receive the covered work from you, a discriminatory
|
||||||
|
patent license (a) in connection with copies of the covered work
|
||||||
|
conveyed by you (or copies made from those copies), or (b) primarily
|
||||||
|
for and in connection with specific products or compilations that
|
||||||
|
contain the covered work, unless you entered into that arrangement,
|
||||||
|
or that patent license was granted, prior to 28 March 2007.
|
||||||
|
|
||||||
|
Nothing in this License shall be construed as excluding or limiting
|
||||||
|
any implied license or other defenses to infringement that may
|
||||||
|
otherwise be available to you under applicable patent law.
|
||||||
|
|
||||||
|
12. No Surrender of Others' Freedom.
|
||||||
|
|
||||||
|
If conditions are imposed on you (whether by court order, agreement or
|
||||||
|
otherwise) that contradict the conditions of this License, they do not
|
||||||
|
excuse you from the conditions of this License. If you cannot convey a
|
||||||
|
covered work so as to satisfy simultaneously your obligations under this
|
||||||
|
License and any other pertinent obligations, then as a consequence you may
|
||||||
|
not convey it at all. For example, if you agree to terms that obligate you
|
||||||
|
to collect a royalty for further conveying from those to whom you convey
|
||||||
|
the Program, the only way you could satisfy both those terms and this
|
||||||
|
License would be to refrain entirely from conveying the Program.
|
||||||
|
|
||||||
|
13. Use with the GNU Affero General Public License.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, you have
|
||||||
|
permission to link or combine any covered work with a work licensed
|
||||||
|
under version 3 of the GNU Affero General Public License into a single
|
||||||
|
combined work, and to convey the resulting work. The terms of this
|
||||||
|
License will continue to apply to the part which is the covered work,
|
||||||
|
but the special requirements of the GNU Affero General Public License,
|
||||||
|
section 13, concerning interaction through a network will apply to the
|
||||||
|
combination as such.
|
||||||
|
|
||||||
|
14. Revised Versions of this License.
|
||||||
|
|
||||||
|
The Free Software Foundation may publish revised and/or new versions of
|
||||||
|
the GNU General Public License from time to time. Such new versions will
|
||||||
|
be similar in spirit to the present version, but may differ in detail to
|
||||||
|
address new problems or concerns.
|
||||||
|
|
||||||
|
Each version is given a distinguishing version number. If the
|
||||||
|
Program specifies that a certain numbered version of the GNU General
|
||||||
|
Public License "or any later version" applies to it, you have the
|
||||||
|
option of following the terms and conditions either of that numbered
|
||||||
|
version or of any later version published by the Free Software
|
||||||
|
Foundation. If the Program does not specify a version number of the
|
||||||
|
GNU General Public License, you may choose any version ever published
|
||||||
|
by the Free Software Foundation.
|
||||||
|
|
||||||
|
If the Program specifies that a proxy can decide which future
|
||||||
|
versions of the GNU General Public License can be used, that proxy's
|
||||||
|
public statement of acceptance of a version permanently authorizes you
|
||||||
|
to choose that version for the Program.
|
||||||
|
|
||||||
|
Later license versions may give you additional or different
|
||||||
|
permissions. However, no additional obligations are imposed on any
|
||||||
|
author or copyright holder as a result of your choosing to follow a
|
||||||
|
later version.
|
||||||
|
|
||||||
|
15. Disclaimer of Warranty.
|
||||||
|
|
||||||
|
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||||
|
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||||
|
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||||
|
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||||
|
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||||
|
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||||
|
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||||
|
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||||
|
|
||||||
|
16. Limitation of Liability.
|
||||||
|
|
||||||
|
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||||
|
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||||
|
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||||
|
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||||
|
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||||
|
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||||
|
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||||
|
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||||
|
SUCH DAMAGES.
|
||||||
|
|
||||||
|
17. Interpretation of Sections 15 and 16.
|
||||||
|
|
||||||
|
If the disclaimer of warranty and limitation of liability provided
|
||||||
|
above cannot be given local legal effect according to their terms,
|
||||||
|
reviewing courts shall apply local law that most closely approximates
|
||||||
|
an absolute waiver of all civil liability in connection with the
|
||||||
|
Program, unless a warranty or assumption of liability accompanies a
|
||||||
|
copy of the Program in return for a fee.
|
||||||
|
|
||||||
|
END OF TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
How to Apply These Terms to Your New Programs
|
||||||
|
|
||||||
|
If you develop a new program, and you want it to be of the greatest
|
||||||
|
possible use to the public, the best way to achieve this is to make it
|
||||||
|
free software which everyone can redistribute and change under these terms.
|
||||||
|
|
||||||
|
To do so, attach the following notices to the program. It is safest
|
||||||
|
to attach them to the start of each source file to most effectively
|
||||||
|
state the exclusion of warranty; and each file should have at least
|
||||||
|
the "copyright" line and a pointer to where the full notice is found.
|
||||||
|
|
||||||
|
<one line to give the program's name and a brief idea of what it does.>
|
||||||
|
Copyright (C) <year> <name of author>
|
||||||
|
|
||||||
|
This program is free software: you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation, either version 3 of the License, or
|
||||||
|
(at your option) any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU General Public License
|
||||||
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
Also add information on how to contact you by electronic and paper mail.
|
||||||
|
|
||||||
|
If the program does terminal interaction, make it output a short
|
||||||
|
notice like this when it starts in an interactive mode:
|
||||||
|
|
||||||
|
<program> Copyright (C) <year> <name of author>
|
||||||
|
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||||
|
This is free software, and you are welcome to redistribute it
|
||||||
|
under certain conditions; type `show c' for details.
|
||||||
|
|
||||||
|
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||||
|
parts of the General Public License. Of course, your program's commands
|
||||||
|
might be different; for a GUI interface, you would use an "about box".
|
||||||
|
|
||||||
|
You should also get your employer (if you work as a programmer) or school,
|
||||||
|
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||||
|
For more information on this, and how to apply and follow the GNU GPL, see
|
||||||
|
<http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
The GNU General Public License does not permit incorporating your program
|
||||||
|
into proprietary programs. If your program is a subroutine library, you
|
||||||
|
may consider it more useful to permit linking proprietary applications with
|
||||||
|
the library. If this is what you want to do, use the GNU Lesser General
|
||||||
|
Public License instead of this License. But first, please read
|
||||||
|
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
|
|
@ -0,0 +1,49 @@
|
||||||
|
# Hack Assembler in Haskell
|
||||||
|
|
||||||
|
`Asmblr` is a small Haskell program that transforms *Hack Assembly* into its machine language representation.
|
||||||
|
|
||||||
|
## Features
|
||||||
|
|
||||||
|
* Follows a similar structure to the implementation describe by the *Nand to Tetris* book
|
||||||
|
* Faster then the implementation given with the *Nand to Tetris* course
|
||||||
|
* Can read from stdin and write to stdout (if requested)
|
||||||
|
* Uses open-source tools wherever possible
|
||||||
|
|
||||||
|
## Building
|
||||||
|
|
||||||
|
`Asmblr` requires GHC and cabal to be built and can be done like so:
|
||||||
|
|
||||||
|
$ cabal configure
|
||||||
|
$ cabal build
|
||||||
|
|
||||||
|
Once built, the `Asmblr` executable will be in the `dist/build/Asmblr` folder, and can be run using cabal, or your shell. The `Asmblr` program can also be installed using `cabal install`. For more information on installing cabal packages and using cabal see [its manual](https://www.haskell.org/cabal/users-guide/).
|
||||||
|
|
||||||
|
## Tools
|
||||||
|
|
||||||
|
The creation of this software was made possible by the following open source tools and
|
||||||
|
libraries.
|
||||||
|
|
||||||
|
* [Gnu Emacs][], because there is no place like home; and no greater editor!
|
||||||
|
* [GHC][], for compilation of Haskell code
|
||||||
|
* [Cabal][], for building the project
|
||||||
|
|
||||||
|
## License
|
||||||
|
|
||||||
|
This project is licensed under the [GPLv3][]. Please see the LICENSE file for full details.
|
||||||
|
|
||||||
|
## Issues
|
||||||
|
|
||||||
|
There are some minor issues that can be cleaned up in future releases. Namely, making error output more human readable, and a few minor optimization's.
|
||||||
|
|
||||||
|
* Explicitly handle if input file dne or is unreadable
|
||||||
|
* Explicitly handle if output file is un-writable
|
||||||
|
* Create ParseException type to throw from parser and can be caught in Asmblr.defaultMain
|
||||||
|
* Add (<?> "error description") throughout parsers to make error output more readable
|
||||||
|
* Re-factor cInstrDest and cInstrAluOps to remove unneeded use of 'try'
|
||||||
|
for optimization's sake
|
||||||
|
* Write tests so that future changes don't break things (see folder `testsuite`)
|
||||||
|
|
||||||
|
[Gnu Emacs]: http://www.gnu.org/software/emacs/
|
||||||
|
[GPLv3]: https://www.gnu.org/licenses/gpl.html
|
||||||
|
[GHC]: https://www.haskell.org/ghc/
|
||||||
|
[Cabal]: https://github.com/haskell/cabal/
|
|
@ -0,0 +1,13 @@
|
||||||
|
// This file is part of www.nand2tetris.org
|
||||||
|
// and the book "The Elements of Computing Systems"
|
||||||
|
// by Nisan and Schocken, MIT Press.
|
||||||
|
// File name: projects/06/add/Add.asm
|
||||||
|
|
||||||
|
// Computes R0 = 2 + 3
|
||||||
|
|
||||||
|
@2
|
||||||
|
D=A
|
||||||
|
@3
|
||||||
|
D=D+A
|
||||||
|
@0
|
||||||
|
M=D
|
|
@ -0,0 +1,26 @@
|
||||||
|
// This file is part of www.nand2tetris.org
|
||||||
|
// and the book "The Elements of Computing Systems"
|
||||||
|
// by Nisan and Schocken, MIT Press.
|
||||||
|
// File name: projects/06/max/Max.asm
|
||||||
|
|
||||||
|
// Computes R2 = max(R0, R1) (R0,R1,R2 refer to RAM[0],RAM[1],RAM[2])
|
||||||
|
|
||||||
|
@R0
|
||||||
|
D=M // D = first number
|
||||||
|
@R1
|
||||||
|
D=D-M // D = first number - second number
|
||||||
|
@OUTPUT_FIRST
|
||||||
|
D;JGT // if D>0 (first is greater) goto output_first
|
||||||
|
@R1
|
||||||
|
D=M // D = second number
|
||||||
|
@OUTPUT_D
|
||||||
|
0;JMP // goto output_d
|
||||||
|
(OUTPUT_FIRST)
|
||||||
|
@R0
|
||||||
|
D=M // D = first number
|
||||||
|
(OUTPUT_D)
|
||||||
|
@R2
|
||||||
|
M=D // M[2] = D (greatest number)
|
||||||
|
(INFINITE_LOOP)
|
||||||
|
@INFINITE_LOOP
|
||||||
|
0;JMP // infinite loop
|
|
@ -0,0 +1,26 @@
|
||||||
|
// This file is part of www.nand2tetris.org
|
||||||
|
// and the book "The Elements of Computing Systems"
|
||||||
|
// by Nisan and Schocken, MIT Press.
|
||||||
|
// File name: projects/06/max/Max.asm
|
||||||
|
|
||||||
|
// Computes R2 = max(R0, R1) (R0,R1,R2 refer to RAM[0],RAM[1],RAM[2])
|
||||||
|
|
||||||
|
@R0
|
||||||
|
D=M // D = first number
|
||||||
|
@R1
|
||||||
|
D=D-M // D = first number - second number
|
||||||
|
@OUTPUT_FIRST
|
||||||
|
D;JGT // if D>0 (first is greater) goto output_first
|
||||||
|
@R1
|
||||||
|
D=M // D = second number
|
||||||
|
@OUTPUT_D
|
||||||
|
0;JMP // goto output_d
|
||||||
|
(OUTPUT_FIRST)
|
||||||
|
@R0
|
||||||
|
D=M // D = first number
|
||||||
|
(OUTPUT_D)
|
||||||
|
@R2
|
||||||
|
M=D // M[2] = D (greatest number)
|
||||||
|
(INFINITE_LOOP)
|
||||||
|
@INFINITE_LOOP
|
||||||
|
0;JMP // infinite loop
|
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
|
@ -0,0 +1,35 @@
|
||||||
|
// This file is part of www.nand2tetris.org
|
||||||
|
// and the book "The Elements of Computing Systems"
|
||||||
|
// by Nisan and Schocken, MIT Press.
|
||||||
|
// File name: projects/06/rect/Rect.asm
|
||||||
|
|
||||||
|
// Draws a rectangle at the top-left corner of the screen.
|
||||||
|
// The rectangle is 16 pixels wide and R0 pixels high.
|
||||||
|
|
||||||
|
@0
|
||||||
|
D=M
|
||||||
|
@INFINITE_LOOP
|
||||||
|
D;JLE
|
||||||
|
@counter
|
||||||
|
M=D
|
||||||
|
@SCREEN
|
||||||
|
D=A
|
||||||
|
@address
|
||||||
|
M=D
|
||||||
|
(LOOP)
|
||||||
|
@address
|
||||||
|
A=M
|
||||||
|
M=-1
|
||||||
|
@address
|
||||||
|
D=M
|
||||||
|
@32
|
||||||
|
D=D+A
|
||||||
|
@address
|
||||||
|
M=D
|
||||||
|
@counter
|
||||||
|
MD=M-1
|
||||||
|
@LOOP
|
||||||
|
D;JGT
|
||||||
|
(INFINITE_LOOP)
|
||||||
|
@INFINITE_LOOP
|
||||||
|
0;JMP
|
|
@ -0,0 +1,111 @@
|
||||||
|
-- (C) Copyright Collin J. Doering 2015
|
||||||
|
--
|
||||||
|
-- This program is free software: you can redistribute it and/or modify
|
||||||
|
-- it under the terms of the GNU General Public License as published by
|
||||||
|
-- the Free Software Foundation, either version 3 of the License, or
|
||||||
|
-- (at your option) any later version.
|
||||||
|
--
|
||||||
|
-- This program is distributed in the hope that it will be useful,
|
||||||
|
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
-- GNU General Public License for more details.
|
||||||
|
--
|
||||||
|
-- You should have received a copy of the GNU General Public License
|
||||||
|
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
-- File: Asmblr.hs
|
||||||
|
-- Author: Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||||
|
-- Date: Jun 5, 2015
|
||||||
|
|
||||||
|
----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
{-|
|
||||||
|
Module : Asmblr
|
||||||
|
Description : Program that takes a hack assembly and converts it to its
|
||||||
|
machine language representation
|
||||||
|
Copyright : (c) Collin J. Doering, 2015
|
||||||
|
License : GPL-3
|
||||||
|
Maintainer : collin.doering@rekahsoft.ca
|
||||||
|
Stability : stable
|
||||||
|
Portability : POSIX
|
||||||
|
|
||||||
|
TODO: describe the assemblers operation in more detail
|
||||||
|
-}
|
||||||
|
module Asmblr (defaultMain) where
|
||||||
|
|
||||||
|
import System.IO
|
||||||
|
import System.FilePath (dropExtension)
|
||||||
|
import System.Console.GetOpt
|
||||||
|
import System.Environment (getArgs)
|
||||||
|
|
||||||
|
import Asmblr.Parser
|
||||||
|
|
||||||
|
----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
|
data Flag = Verbose
|
||||||
|
| Version
|
||||||
|
| Help
|
||||||
|
| Output (Maybe String)
|
||||||
|
deriving (Eq, Show)
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
|
options :: [OptDescr Flag]
|
||||||
|
options = [ Option ['v'] ["verbose"] (NoArg Verbose) "chatty output on stderr"
|
||||||
|
, Option ['V'] ["version"] (NoArg Version) "show version number"
|
||||||
|
, Option ['h'] ["help"] (NoArg Help) "show program usage"
|
||||||
|
, Option ['o'] ["output"] (OptArg Output "FILE") "output file or '-' for stdout" ]
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
|
isVersion :: Flag -> Bool
|
||||||
|
isVersion Version = True
|
||||||
|
isVersion _ = False
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
|
isHelp :: Flag -> Bool
|
||||||
|
isHelp Help = True
|
||||||
|
isHelp _ = False
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
|
hasOutput :: [Flag] -> Maybe String
|
||||||
|
hasOutput [] = Nothing
|
||||||
|
hasOutput ((Output (Just x)):_) = Just x
|
||||||
|
hasOutput (_:xs) = hasOutput xs
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
|
progVersion :: String
|
||||||
|
progVersion = unlines
|
||||||
|
[ "Assmblr 0.1.0.0"
|
||||||
|
, "Copyright (C) 2014 RekahSoft, Ltd."
|
||||||
|
, "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>."
|
||||||
|
, "This is free software: you are free to change and redistribute it."
|
||||||
|
, "There is NO WARRANTY, to the extent permitted by law."
|
||||||
|
, ""
|
||||||
|
, "Written by Collin J. Doering." ]
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
|
defaultMain :: IO ()
|
||||||
|
defaultMain = do
|
||||||
|
argv <- getArgs
|
||||||
|
|
||||||
|
case getOpt Permute options argv of
|
||||||
|
(o, _, []) | any isVersion o -> putStr progVersion
|
||||||
|
(o, _, []) | any isHelp o -> putStr $ usageInfo header options
|
||||||
|
(o, [i], []) -> do
|
||||||
|
--curDir <- getWorkingDirectory
|
||||||
|
inFile <- if i == "-"
|
||||||
|
then return stdin
|
||||||
|
else openFile i ReadMode
|
||||||
|
outFile <- case hasOutput o of
|
||||||
|
Nothing -> if i /= "-"
|
||||||
|
then openFile (dropExtension i ++ ".hack") WriteMode
|
||||||
|
else return stdout
|
||||||
|
Just x | x == "-" -> return stdout
|
||||||
|
Just x -> openFile x WriteMode
|
||||||
|
|
||||||
|
hGetContents inFile >>= parseHackAsm >>= hPutStr outFile
|
||||||
|
hClose inFile
|
||||||
|
hClose outFile
|
||||||
|
(o, xs, []) -> ioError (userError $ "Gave more then one input file.\n" ++ usageInfo header options)
|
||||||
|
(_, _, errs) -> ioError (userError (concat errs ++ usageInfo header options))
|
||||||
|
where header = "Usage: Asmblr [OPTION...] file"
|
|
@ -13,41 +13,54 @@
|
||||||
-- You should have received a copy of the GNU General Public License
|
-- You should have received a copy of the GNU General Public License
|
||||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
-- File: Asmblr.hs
|
-- File: Parser.hs
|
||||||
-- Author: Collin J. Doering <collin.doering@rekahsoft.ca>
|
-- Author: Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||||
-- Date: Jun 5, 2015
|
-- Date: Jun 16, 2015
|
||||||
|
|
||||||
----------------------------------------------------------------------------
|
{-|
|
||||||
|
Module : Asmblr.Parser
|
||||||
|
Description : Parse hack assembly into its machine language representation
|
||||||
|
Copyright : (c) Collin J. Doering, 2015
|
||||||
|
License : GPL-3
|
||||||
|
Maintainer : collin.doering@rekahsoft.ca
|
||||||
|
Stability : stable
|
||||||
|
Portability : POSIX
|
||||||
|
|
||||||
|
TODO: describe the assemblers operation in more detail
|
||||||
|
-}
|
||||||
|
module Asmblr.Parser (parseHackAsm, parseHackAsmFile) where
|
||||||
|
|
||||||
import Text.ParserCombinators.Parsec
|
import Text.ParserCombinators.Parsec
|
||||||
import Text.Parsec.Prim (modifyState)
|
import Text.Parsec.Prim (modifyState)
|
||||||
import Text.Parsec.Char (endOfLine)
|
import Text.Parsec.Char (endOfLine)
|
||||||
|
|
||||||
import System.IO
|
import System.IO
|
||||||
import System.FilePath (dropExtension)
|
|
||||||
import System.Console.GetOpt
|
|
||||||
import System.Environment (getArgs)
|
|
||||||
|
|
||||||
import Control.Monad (liftM)
|
import Control.Monad (liftM)
|
||||||
|
import Control.Exception hiding (try)
|
||||||
import Numeric (showIntAtBase)
|
import Numeric (showIntAtBase)
|
||||||
import Data.Char (intToDigit)
|
import Data.Char (intToDigit)
|
||||||
import qualified Data.Map as Map
|
import qualified Data.Map as Map
|
||||||
|
|
||||||
----------------------------------------------------------------------------
|
----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
type Label = String
|
type Label = String
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
type SymbolTable = Map.Map Label Int
|
type SymbolTable = Map.Map Label Int
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
data Instruction = AInstr Int
|
data Instruction = AInstr Int
|
||||||
| CInstr String String String
|
| CInstr String String String
|
||||||
deriving (Show, Read, Eq)
|
deriving (Show, Read, Eq)
|
||||||
|
|
||||||
----------------------------------------------------------------------------
|
----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
aInstrAddr :: GenParser Char st Instruction
|
aInstrAddr :: GenParser Char st Instruction
|
||||||
aInstrAddr = AInstr . read <$> many1 digit
|
aInstrAddr = AInstr . read <$> many1 digit
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
aInstrSym :: GenParser Char (Int, SymbolTable) Instruction
|
aInstrSym :: GenParser Char (Int, SymbolTable) Instruction
|
||||||
aInstrSym = do
|
aInstrSym = do
|
||||||
var <- symbol
|
var <- symbol
|
||||||
|
@ -59,11 +72,13 @@ aInstrSym = do
|
||||||
return $ AInstr curMem
|
return $ AInstr curMem
|
||||||
Just varCurMem -> return $ AInstr varCurMem
|
Just varCurMem -> return $ AInstr varCurMem
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
aInstr :: GenParser Char (Int, SymbolTable) Instruction
|
aInstr :: GenParser Char (Int, SymbolTable) Instruction
|
||||||
aInstr = do
|
aInstr = do
|
||||||
char '@'
|
char '@'
|
||||||
aInstrAddr <|> aInstrSym
|
aInstrAddr <|> aInstrSym
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
cInstrDest :: GenParser Char st (Label, String)
|
cInstrDest :: GenParser Char st (Label, String)
|
||||||
cInstrDest = choice [ try (string "AMD") >> return ("AMD", "111")
|
cInstrDest = choice [ try (string "AMD") >> return ("AMD", "111")
|
||||||
, try (string "AD") >> return ("AD", "110")
|
, try (string "AD") >> return ("AD", "110")
|
||||||
|
@ -73,6 +88,7 @@ cInstrDest = choice [ try (string "AMD") >> return ("AMD", "111")
|
||||||
, char 'D' >> return ("D", "010")
|
, char 'D' >> return ("D", "010")
|
||||||
, char 'M' >> return ("M", "001") ]
|
, char 'M' >> return ("M", "001") ]
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
cInstrJump :: GenParser Char st (Label, String)
|
cInstrJump :: GenParser Char st (Label, String)
|
||||||
cInstrJump = char 'J' >>
|
cInstrJump = char 'J' >>
|
||||||
choice [ string "MP" >> return ("JMP", "111")
|
choice [ string "MP" >> return ("JMP", "111")
|
||||||
|
@ -83,6 +99,7 @@ cInstrJump = char 'J' >>
|
||||||
, try (string "GE") >> return ("JGE", "011")
|
, try (string "GE") >> return ("JGE", "011")
|
||||||
, string "GT" >> return ("JGT", "001") ]
|
, string "GT" >> return ("JGT", "001") ]
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
cInstrAluOps :: GenParser Char st (Label, String)
|
cInstrAluOps :: GenParser Char st (Label, String)
|
||||||
cInstrAluOps = choice [ char '0' >> return ("0", "0101010")
|
cInstrAluOps = choice [ char '0' >> return ("0", "0101010")
|
||||||
, char '1' >> return ("1", "0111111")
|
, char '1' >> return ("1", "0111111")
|
||||||
|
@ -118,6 +135,7 @@ cInstrAluOps = choice [ char '0' >> return ("0", "0101010")
|
||||||
, try (string "M-D") >> return ("M-D", "1000111")
|
, try (string "M-D") >> return ("M-D", "1000111")
|
||||||
, char 'M' >> return ("M", "1110000") ]
|
, char 'M' >> return ("M", "1110000") ]
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
cInstrNoJump :: GenParser Char st Instruction
|
cInstrNoJump :: GenParser Char st Instruction
|
||||||
cInstrNoJump = do
|
cInstrNoJump = do
|
||||||
(_, dest) <- cInstrDest
|
(_, dest) <- cInstrDest
|
||||||
|
@ -126,6 +144,7 @@ cInstrNoJump = do
|
||||||
|
|
||||||
return $ CInstr aluOp dest "000"
|
return $ CInstr aluOp dest "000"
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
cInstrNoDest :: GenParser Char st Instruction
|
cInstrNoDest :: GenParser Char st Instruction
|
||||||
cInstrNoDest = do
|
cInstrNoDest = do
|
||||||
(_, aluOp) <- cInstrAluOps
|
(_, aluOp) <- cInstrAluOps
|
||||||
|
@ -134,6 +153,7 @@ cInstrNoDest = do
|
||||||
|
|
||||||
return $ CInstr aluOp "000" jump
|
return $ CInstr aluOp "000" jump
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
cInstrDestJump :: GenParser Char st Instruction
|
cInstrDestJump :: GenParser Char st Instruction
|
||||||
cInstrDestJump = do
|
cInstrDestJump = do
|
||||||
(_, dest) <- cInstrDest
|
(_, dest) <- cInstrDest
|
||||||
|
@ -144,20 +164,25 @@ cInstrDestJump = do
|
||||||
|
|
||||||
return $ CInstr aluOp dest jump
|
return $ CInstr aluOp dest jump
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
cInstr :: GenParser Char st Instruction
|
cInstr :: GenParser Char st Instruction
|
||||||
cInstr = try cInstrDestJump <|> try cInstrNoDest <|> cInstrNoJump
|
cInstr = try cInstrDestJump <|> try cInstrNoDest <|> cInstrNoJump
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
instr :: GenParser Char (Int, SymbolTable) Instruction
|
instr :: GenParser Char (Int, SymbolTable) Instruction
|
||||||
instr = aInstr <|> cInstr
|
instr = aInstr <|> cInstr
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
symbol :: GenParser Char st String
|
symbol :: GenParser Char st String
|
||||||
symbol = many1 (alphaNum <|> oneOf "_.$:")
|
symbol = many1 (alphaNum <|> oneOf "_.$:")
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
comment :: GenParser Char st String
|
comment :: GenParser Char st String
|
||||||
comment = do
|
comment = do
|
||||||
string "//" >> manyTill anyChar (lookAhead endOfLine)
|
string "//" >> manyTill anyChar (lookAhead endOfLine)
|
||||||
return ""
|
return ""
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
labelLine :: GenParser Char (a, Map.Map Label a) String
|
labelLine :: GenParser Char (a, Map.Map Label a) String
|
||||||
labelLine= do
|
labelLine= do
|
||||||
lbl <- between (char '(') (char ')') symbol
|
lbl <- between (char '(') (char ')') symbol
|
||||||
|
@ -170,6 +195,7 @@ labelLine= do
|
||||||
Just _ -> error $ "Aleady used label \"" ++ lbl ++ "\""
|
Just _ -> error $ "Aleady used label \"" ++ lbl ++ "\""
|
||||||
return ""
|
return ""
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
instrLine :: GenParser Char (Int, a) String
|
instrLine :: GenParser Char (Int, a) String
|
||||||
instrLine = do
|
instrLine = do
|
||||||
ret <- aInstr' <|> cInstr'
|
ret <- aInstr' <|> cInstr'
|
||||||
|
@ -201,28 +227,34 @@ instrLine = do
|
||||||
(Nothing, Just jump') -> return $ op ++ ";" ++ jump'
|
(Nothing, Just jump') -> return $ op ++ ";" ++ jump'
|
||||||
(Just dest', Just jump') -> return $ dest' ++ "=" ++ op ++ ";" ++ jump'
|
(Just dest', Just jump') -> return $ dest' ++ "=" ++ op ++ ";" ++ jump'
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
emptyLine :: GenParser Char st String
|
emptyLine :: GenParser Char st String
|
||||||
emptyLine = manyTill space (lookAhead endOfLine)
|
emptyLine = manyTill space (lookAhead endOfLine)
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
lineSpaces :: GenParser Char st String
|
lineSpaces :: GenParser Char st String
|
||||||
lineSpaces = many $ oneOf " \t"
|
lineSpaces = many $ oneOf " \t"
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
firstPass :: GenParser Char (Int, SymbolTable) (String, SymbolTable)
|
firstPass :: GenParser Char (Int, SymbolTable) (String, SymbolTable)
|
||||||
firstPass = do
|
firstPass = do
|
||||||
str <- liftM (unlines . filter (not . null)) $ (flip sepEndBy) endOfLine $ do
|
str <- liftM (unlines . filter (not . null)) $ (flip sepEndBy) endOfLine $ do
|
||||||
optional lineSpaces
|
optional lineSpaces
|
||||||
comment <|> emptyLine <|> labelLine <|> instrLine
|
comment <|> emptyLine <|> labelLine <|> instrLine
|
||||||
|
eof
|
||||||
(_, symTbl) <- getState
|
(_, symTbl) <- getState
|
||||||
return (str, symTbl)
|
return (str, symTbl)
|
||||||
|
|
||||||
|
-- | TODO: Documentation
|
||||||
secondPass :: GenParser Char (Int, SymbolTable) [Instruction]
|
secondPass :: GenParser Char (Int, SymbolTable) [Instruction]
|
||||||
secondPass = sepEndBy instr endOfLine
|
secondPass = sepEndBy instr endOfLine
|
||||||
|
|
||||||
|
-- | @parseHackAsm s@ parses @s@ and returns its hack machine language equivalent
|
||||||
parseHackAsm :: Monad m => String -> m String
|
parseHackAsm :: Monad m => String -> m String
|
||||||
parseHackAsm str = case runParser firstPass (0, varSymbols) "" str of
|
parseHackAsm str = case runParser firstPass (0, varSymbols) "" str of
|
||||||
Left err -> return $ show err
|
Left err -> throw . userError $ show err
|
||||||
Right (str', symTbl) -> case runParser secondPass (16, symTbl) "" str' of
|
Right (str', symTbl) -> case runParser secondPass (16, symTbl) "" str' of
|
||||||
Left err -> return $ show err
|
Left err -> throw . userError $ show err
|
||||||
Right out -> return $ genHackML out
|
Right out -> return $ genHackML out
|
||||||
where varSymbols = Map.fromList [ ("R0", 0), ("SP", 0)
|
where varSymbols = Map.fromList [ ("R0", 0), ("SP", 0)
|
||||||
, ("R1", 1), ("LCL", 1)
|
, ("R1", 1), ("LCL", 1)
|
||||||
|
@ -243,68 +275,15 @@ parseHackAsm str = case runParser firstPass (0, varSymbols) "" str of
|
||||||
, ("SCREEN", 16384)
|
, ("SCREEN", 16384)
|
||||||
, ("KBD", 24576) ]
|
, ("KBD", 24576) ]
|
||||||
|
|
||||||
|
-- | The expression @parseHackAsmFile f@ will parse the file given by @f@
|
||||||
|
-- and output the resulting hack machine language to stdout
|
||||||
|
parseHackAsmFile :: FilePath -> IO ()
|
||||||
|
parseHackAsmFile f = withFile f ReadMode $ \h -> do
|
||||||
|
hGetContents h >>= parseHackAsm >>= putStr
|
||||||
|
|
||||||
|
-- | Given a list of @Instructions@ returns its hack machine language equivalent
|
||||||
genHackML :: [Instruction] -> String
|
genHackML :: [Instruction] -> String
|
||||||
genHackML xs = unlines $ map instrToML xs
|
genHackML xs = unlines $ map instrToML xs
|
||||||
where instrToML (AInstr n) = leftPad 16 '0' $ showIntAtBase 2 intToDigit n ""
|
where instrToML (AInstr n) = leftPad 16 '0' $ showIntAtBase 2 intToDigit n ""
|
||||||
instrToML (CInstr op dest jump) = "111" ++ op ++ dest ++ jump
|
instrToML (CInstr op dest jump) = "111" ++ op ++ dest ++ jump
|
||||||
leftPad n a ys = replicate (n - (length ys)) a ++ ys
|
leftPad n a ys = replicate (n - (length ys)) a ++ ys
|
||||||
|
|
||||||
----------------------------------------------------------------------------
|
|
||||||
|
|
||||||
data Flag = Verbose
|
|
||||||
| Version
|
|
||||||
| Help
|
|
||||||
| Output (Maybe String)
|
|
||||||
deriving (Eq, Show)
|
|
||||||
|
|
||||||
options :: [OptDescr Flag]
|
|
||||||
options = [ Option ['v'] ["verbose"] (NoArg Verbose) "chatty output on stderr"
|
|
||||||
, Option ['V'] ["version"] (NoArg Version) "show version number"
|
|
||||||
, Option ['h'] ["help"] (NoArg Help) "show program usage"
|
|
||||||
, Option ['o'] ["output"] (OptArg Output "FILE") "output file or '-' for stdout" ]
|
|
||||||
|
|
||||||
progVersion :: String
|
|
||||||
progVersion = unlines [ "Assmblr 1.0"
|
|
||||||
, "Copyright (C) 2014 RekahSoft, Ltd."
|
|
||||||
, "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>."
|
|
||||||
, "This is free software: you are free to change and redistribute it."
|
|
||||||
, "There is NO WARRANTY, to the extent permitted by law."
|
|
||||||
, ""
|
|
||||||
, "Written by Collin J. Doering." ]
|
|
||||||
|
|
||||||
-- TODO:
|
|
||||||
-- * handle if input file dne or is unreadable
|
|
||||||
-- * handle if output file is unwritable
|
|
||||||
-- * display parser errors on stdout and do not generate output file
|
|
||||||
|
|
||||||
main :: IO ()
|
|
||||||
main = do
|
|
||||||
argv <- getArgs
|
|
||||||
|
|
||||||
case getOpt Permute options argv of
|
|
||||||
(o, _, []) | any isVersion o -> putStr progVersion
|
|
||||||
(o, _, []) | any isHelp o -> putStr $ usageInfo header options
|
|
||||||
(o, [i], []) -> do
|
|
||||||
--curDir <- getWorkingDirectory
|
|
||||||
inFile <- if i == "-"
|
|
||||||
then return stdin
|
|
||||||
else openFile i ReadMode
|
|
||||||
outFile <- case hasOutput o of
|
|
||||||
Nothing -> if i /= "-"
|
|
||||||
then openFile (dropExtension i ++ ".hack") WriteMode
|
|
||||||
else return stdout
|
|
||||||
Just x | x == "-" -> return stdout
|
|
||||||
Just x -> openFile x WriteMode
|
|
||||||
|
|
||||||
hGetContents inFile >>= parseHackAsm >>= hPutStr outFile
|
|
||||||
hClose inFile
|
|
||||||
hClose outFile
|
|
||||||
(_, _, errs) -> ioError (userError (concat errs ++ usageInfo header options))
|
|
||||||
where header = "Usage: Asmblr [OPTION...] file"
|
|
||||||
isVersion Version = True
|
|
||||||
isVersion _ = False
|
|
||||||
isHelp Help = True
|
|
||||||
isHelp _ = False
|
|
||||||
hasOutput [] = Nothing
|
|
||||||
hasOutput ((Output (Just x)):_) = Just x
|
|
||||||
hasOutput (_:xs) = hasOutput xs
|
|
|
@ -0,0 +1,25 @@
|
||||||
|
-- (C) Copyright Collin J. Doering 2015
|
||||||
|
--
|
||||||
|
-- This program is free software: you can redistribute it and/or modify
|
||||||
|
-- it under the terms of the GNU General Public License as published by
|
||||||
|
-- the Free Software Foundation, either version 3 of the License, or
|
||||||
|
-- (at your option) any later version.
|
||||||
|
--
|
||||||
|
-- This program is distributed in the hope that it will be useful,
|
||||||
|
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
-- GNU General Public License for more details.
|
||||||
|
--
|
||||||
|
-- You should have received a copy of the GNU General Public License
|
||||||
|
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
-- File: Main.hs
|
||||||
|
-- Author: Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||||
|
-- Date: Jun 16, 2015
|
||||||
|
|
||||||
|
module Main where
|
||||||
|
|
||||||
|
import Asmblr
|
||||||
|
|
||||||
|
main :: IO ()
|
||||||
|
main = defaultMain
|
|
@ -0,0 +1,23 @@
|
||||||
|
#!/bin/sh
|
||||||
|
|
||||||
|
# (C) Copyright Collin J. Doering 2015
|
||||||
|
#
|
||||||
|
# This program is free software: you can redistribute it and/or modify
|
||||||
|
# it under the terms of the GNU General Public License as published by
|
||||||
|
# the Free Software Foundation, either version 3 of the License, or
|
||||||
|
# (at your option) any later version.
|
||||||
|
#
|
||||||
|
# This program is distributed in the hope that it will be useful,
|
||||||
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
# GNU General Public License for more details.
|
||||||
|
#
|
||||||
|
# You should have received a copy of the GNU General Public License
|
||||||
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
# File: runtest.sh
|
||||||
|
# Author: Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||||
|
# Date: Jun 16, 2015
|
||||||
|
|
||||||
|
# TODO: implement and run tests
|
||||||
|
exit 0
|
Loading…
Reference in New Issue